Recombinant Human Intersectin-1 (ITSN1), partial

Code CSB-YP621885HU
MSDS
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Source Yeast
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Code CSB-EP621885HU
MSDS
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Source E.coli
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Code CSB-EP621885HU-B
MSDS
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Source E.coli
Conjugate Avi-tag Biotinylated
E. coli biotin ligase (BirA) is highly specific in covalently attaching biotin to the 15 amino acid AviTag peptide. This recombinant protein was biotinylated in vivo by AviTag-BirA technology, which method is BriA catalyzes amide linkage between the biotin and the specific lysine of the AviTag.
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Code CSB-BP621885HU
MSDS
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Source Baculovirus
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Code CSB-MP621885HU
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Source Mammalian cell
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Product Details

Purity
>85% (SDS-PAGE)
Target Names
ITSN1
Uniprot No.
Alternative Names
Human intersectin SH3 domain containing protein SH3P17; Intersectin 1 SH3 domain protein; intersectin 1 short form variant 3; intersectin 1 short form variant, 11; Intersectin short form; intersectin short variant 12; Intersectin-1; Intersectin1; ITSN 1; ITSN; itsn1; ITSN1_HUMAN; MGC134948; MGC134949; OTTHUMP00000067855; OTTHUMP00000067856; OTTHUMP00000067857; OTTHUMP00000194810; OTTHUMP00000194811; OTTHUMP00000194812; OTTHUMP00000206688; SH3 domain containing protein 1A; SH3 domain protein 1A; SH3 domain-containing protein 1A; SH3D1A; SH3P17; Src homology 3 domain containing protein
Species
Homo sapiens (Human)
Protein Length
Partial
Tag Info
Tag type will be determined during the manufacturing process.
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form
Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer before Lyophilization
Tris/PBS-based buffer, 6% Trehalose, pH 8.0
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet
Please contact us to get it.

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Target Background

Function
Adapter protein that provides a link between the endocytic membrane traffic and the actin assembly machinery. Acts as guanine nucleotide exchange factor (GEF) for CDC42, and thereby stimulates actin nucleation mediated by WASL and the ARP2/3 complex. Plays a role in the assembly and maturation of clathrin-coated vesicles. Recruits FCHSD2 to clathrin-coated pits. Involved in endocytosis of activated EGFR, and probably also other growth factor receptors. Involved in endocytosis of integrin beta-1 (ITGB1) and transferrin receptor (TFR); internalization of ITGB1 as DAB2-dependent cargo but not TFR may involve association with DAB2. Promotes ubiquitination and subsequent degradation of EGFR, and thereby contributes to the down-regulation of EGFR-dependent signaling pathways. In chromaffin cells, required for normal exocytosis of catecholamines. Required for rapid replenishment of release-ready synaptic vesicles at presynaptic active zones. Inhibits ARHGAP31 activity toward RAC1.; Plays a role in synaptic vesicle endocytosis in brain neurons.
Gene References into Functions
  1. WIP enhances the interaction of N-WASP with ITSN1 and promotes ITSN1/beta-actin association. PMID: 29958948
  2. Here, we discover that intersectin-s binds DENND2B, a guanine nucleotide exchange factor for the exocytic GTPase Rab13, and this interaction promotes recycling of ligand-free EGFR to the cell surface. Our study thus reveals a novel mechanism controlling the fate of internalized EGFR with important implications for cancer. PMID: 29030480
  3. study reports that vaccinia virus A36 contains three NPF motifs that interact with the Eps15 homology (EH) domains in intersectin-1 and Eps15 to promote the release of virus from infected cells and their subsequent spread PMID: 27670116
  4. Silencing ITSN1 in neuroblastoma cells led to decreased tumor growth in an orthotopic mouse model. Orthotopic animal models can provide insight into the role of ITSN1 pathways in neuroblastoma tumorigenesis. PMID: 28787396
  5. These findings provide the basis for further functional investigations of the ITSN/CR16 complex that may play an important role in actin remodeling and cellular invasion. PMID: 28161632
  6. Abnormal expression of the intersectin1-L protein in epileptic brain tissue may play an important role in epilepsy, especially refractory epilepsy. PMID: 25783631
  7. Study suggests critical roles of ITSN1-S in malignant glioma proliferation, indicating a potential usage of ITSN1-S in the therapeutic intervention as a novel molecular target PMID: 25832561
  8. Our observations suggest that ITSN1 is an important general regulator of Cdc42-, Nck- and N-WASP-dependent actin polymerisation PMID: 24284073
  9. ITSN1 and ITSN2 bind similar proline-rich ligands but are differentially recognized by SH2 domain-containing proteins. PMID: 23936226
  10. Silencing ITSN1 significantly inhibits the anchorage independent growth of tumor cells in vitro. PMID: 22266851
  11. the neuron-specific isoform of the stable tubule-only polypeptide (STOP) interacts with SH3A domain of ITSN1. PMID: 22750298
  12. ITSN-1s, via its SH3A domain has the unique ability to regulate dyn2 assembly-disassembly and function during endocytosis PMID: 21129155
  13. ITSN1 has two isoforms: ITSN1-long and ITSN1-short. siRNA-mediated down regulation of ITSN1-short inhibits migration and invasion of glioma cells. PMID: 21503949
  14. study reveals a link between overexpression of specific ITSN1 isoforms and behavioral phenotypes PMID: 21876463
  15. This novel mammalian ITSN1 isoform possesses a significantly altered domain structure and performs specific protein-protein interactions. PMID: 21712076
  16. Downregulation of intersectin-1s induces apoptosis of brain glioblastoma cells. PMID: 20493827
  17. Studied the inhibitory mechanism of ITSN1L, & id'd a novel short amino acid motif which mediates autoinhibition. Found this motif is located in the SH3 DH linker region, and show that W1221 acts as key residue in establishing inhibitory interaction. PMID: 20842712
  18. These findings expand the role of ITSN1 as a scaffolding molecule bringing together components of endocytic complexes. PMID: 20946875
  19. The identification of fifteen novel transcriptional isoforms of the human ITSN1 gene with full-length coding sequences , is reported. PMID: 19777371
  20. microexons provide a mechanism for the control of tissue-specific interactions of ITSN1 and Src with their partners. PMID: 20659428
  21. intersectin interaction with dynamin was important in regulating the fission and internalization of caveolae PMID: 12960435
  22. review of roles of ITSN1 and DSCR1 in Down syndrome, Alzheimer's disease, endocytosis and vesicle trafficking PMID: 16442855
  23. Results extend the current role of intersectin-1L in endocytosis to a function in exocytosis and support the idea that intersectin-1L is an adaptor that coordinates exo-endocytotic membrane trafficking in secretory cells. PMID: 16874303
  24. ITSN forms a complex with Cbl in vivo mediated by the Src homology (SH) 3 domains binding to the Pro-rich COOH terminus of Cbl. This interaction stimulates the ubiquitylation and degradation of the activated EGFR. PMID: 16914641
  25. findings demonstrate a novel role of ITSN-1s as a negative regulator of the mitochondrial pathway-dependent apoptosis secondary to activation of the Erk1/2 survival signaling pathway PMID: 17405881
  26. These results demonstrate that alternative splicing leads to the formation of two pools of ITSN1 with potentially different properties in neurons, affecting ITSN1 function as adaptor protein. PMID: 18539136
  27. These data provide a molecular link between SHIP2 and ITSN1 which are involved in receptor endocytosis regulation. PMID: 18692052
  28. Intersectin 1 forms a complex with adaptor protein (SH3KBP1 protein), implicated in downregulation of receptor tyrosine kinases. PMID: 19166927
  29. The higher exchange activity of ITSN1L towards the GDP-bound conformation of Cdc42 could represent an evolutionary adaptation of this GEF that ensures nucleotide exchange towards the formation of the signalling-active GTP-bound form of Cdc42. PMID: 19356586

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Subcellular Location
Endomembrane system. Cell junction, synapse, synaptosome. Cell projection, lamellipodium. Cell membrane. Membrane, clathrin-coated pit. Recycling endosome. Endosome. Cytoplasmic vesicle.; [Isoform 2]: Cytoplasm. Endomembrane system. Nucleus envelope.; [Isoform 5]: Endomembrane system.
Tissue Specificity
Isoform 1 is expressed almost exclusively in the brain. Isoform 2 is detected in brain, spleen, lung, liver, heart, skeletal muscle and kidney. Isoform 5 is primarily expressed in brain, spleen, lung and kidney (at protein level). Isoform 1 and isoform 2
Database Links

HGNC: 6183

OMIM: 602442

KEGG: hsa:6453

STRING: 9606.ENSP00000370719

UniGene: Hs.160324

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